Desenvolvimento de planilhas eletrônicas para dimensionamento estrutural de perfis laminados submetidos a esforços de tração e compressão conforme ABNT NBR 8800:2024

Abstract

Hot-rolled steel structures are fundamental to modern engineering, and their design is governed in Brazil by the ABNT NBR 8800 standard, which recently underwent a revision process, with its latest version published on October 2, 2024. However, applying the standard can be didactically complex and unintuitive, hindering its study and practical use. This work aims to develop a computational tool, in the form of electronic spreadsheets, to automate and facilitate the design of hot-rolled I, channel, and angle profiles subjected to axial tensile and compressive forces. The methodology involved creating two spreadsheets in MS Excel, implementing the calculation routines from sections 5.2 and 5.3 of NBR 8800, integrating profile catalogs adapted from the AISC Shapes Database. The tool was validated by comparing its results with examples from the technical literature and CAD models, demonstrating high accuracy with minimal percentage errors. It is concluded that the developed spreadsheets are a reliable and didactic tool, optimizing the sizing process and serving as an effective resource for academic and professional purposes.